<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
    <title>第一个</title>
    <link rel="stylesheet" href="/layui/css/layui.css"/>
</head>
<body>

<h3>555555555555555555555</h3>
<script src="/layui/layui.js"></script>

<script>
    layui.use(['layer',"form"],function () {
        var layer =layui.layer
            ,form = layui.form;
        layer.msg('hello,大家好');
    });
</script>

</body>
</html>